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66 lines
2.2 KiB
66 lines
2.2 KiB
2 years ago
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#if !defined(__has_feature) || !__has_feature(objc_arc)
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#error "This file requires ARC support."
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#endif
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#import "GoogleMapsDemos/Samples/TileLayerViewController.h"
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#import <GoogleMaps/GoogleMaps.h>
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@implementation TileLayerViewController {
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UISegmentedControl *_switcher;
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GMSMapView *_mapView;
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GMSTileLayer *_tileLayer;
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NSInteger _floor;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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GMSCameraPosition *camera = [GMSCameraPosition cameraWithLatitude:37.78318
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longitude:-122.403874
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zoom:18];
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_mapView = [GMSMapView mapWithFrame:CGRectZero camera:camera];
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_mapView.buildingsEnabled = NO;
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_mapView.indoorEnabled = NO;
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self.view = _mapView;
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// The possible floors that might be shown.
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NSArray *types = @[ @"1", @"2", @"3" ];
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// Create a UISegmentedControl that is the navigationItem's titleView.
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_switcher = [[UISegmentedControl alloc] initWithItems:types];
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_switcher.selectedSegmentIndex = 0;
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_switcher.autoresizingMask = UIViewAutoresizingFlexibleWidth;
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_switcher.frame =
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CGRectMake(0, 0, 300, _switcher.frame.size.height);
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self.navigationItem.titleView = _switcher;
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// Listen to touch events on the UISegmentedControl, force initial update.
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[_switcher addTarget:self action:@selector(didChangeSwitcher)
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forControlEvents:UIControlEventValueChanged];
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[self didChangeSwitcher];
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}
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- (void)didChangeSwitcher {
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NSString *title =
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[_switcher titleForSegmentAtIndex:_switcher.selectedSegmentIndex];
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NSInteger floor = [title integerValue];
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if (_floor != floor) {
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// Clear existing tileLayer, if any.
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_tileLayer.map = nil;
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// Create a new GMSTileLayer with the new floor choice.
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GMSTileURLConstructor urls = ^(NSUInteger x, NSUInteger y, NSUInteger zoom) {
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NSString *url = [NSString
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stringWithFormat:@"https://www.gstatic.com/io2010maps/tiles/9/L%zd_%tu_%tu_%tu.png",
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floor, zoom, x, y];
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return [NSURL URLWithString:url];
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};
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_tileLayer = [GMSURLTileLayer tileLayerWithURLConstructor:urls];
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_tileLayer.map = _mapView;
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_floor = floor;
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}
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}
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@end
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